public class IfElseTest {

    public static void main(String[] args) {
        int score = 185;
        if (score >= 90) {
            System.out.println("A");
        } else if (score >= 80) {
            System.out.println("B");
        } else if (score >= 60) {
            System.out.println("C");
        } else {
            System.out.println("D");
        }

        if (score < 100) { // 可读性
            System.out.println("if1...");
        }

    }
}
